5. Science of the steamy shower.

Well-known fact: our core body temperature increases during a hot shower or bath. To counteract this change in environment, our intelligent bodies pulse a little more blood to the top layer of skin, or epidermis, than usual.

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That means there’s less blood flow everywhere else. Faced with increased heat, your body is left without the fluid it needs to keep ‘revving the engine.’ The results? A slowed digestive system and equally slower metabolism.